AS7-4654: Reopened: Instead of storing attribute's value in the vault,
it was the attribute itsel that was stored. Adding a unit test.
Restoring call to:         attributeCreatedDisplay(vaultBlock, attributeName) in VaultSession.
Merge branch 'master' of https://github.com/akram/jboss-as
Merging properly to integrate the call to addSecuredAttributeWithDisplay.

Conflicts:
	security/src/main/java/org/jboss/as/security/vault/VaultTool.java